<br>
<div class="col-md-12">
    <div class="col-md-3"></div>
    <div class="col-md-6">
        <form action="/searchDrug" method="post">
            <div class="input-group">
                <input type="hidden" name="_token" value="{{ csrf_token() }}">
                <input type="text" class="form-control" name="drug_symptom" placeholder="请输入症状">
                <span class="input-group-btn"><button class="btn btn-primary" type="submit">给我搜！</button></span>
            </div><!-- /input-group -->
        </form>
    </div>
    <div class="col-md-3"></div>
</div>
<br><br>